NDLI: Polyol route synthesis of a Fe<sub>3</sub>O<sub>4</sub>@CuS nanohybrid for fast preconcentration of gold ions

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Analytical Methods Vol - 8 Issue - 5

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Polyol route synthesis of a Fe₃O₄@CuS nanohybrid for fast preconcentration of gold ions

Content Provider	Royal Society of Chemistry (RSC)
Author	Beyki, Mostafa Hossein Shirkhodaie, Mahsa Shemirani, Farzaneh
Copyright Year	2016
Abstract	A magnetic Fe3O4@CuS nanohybrid has been successfully prepared by a rapid polyol route. The synthetic procedure includes refluxing a mixture of Fe3O4, CuSO4 and sodium thiosulfate in ethylene glycol at 150 °C for 90 min. The prepared composite has been characterized using XRD, VSM, FE – SEM and Raman techniques. Gold adsorption properties of the nanostructure were investigated using flame atomic absorption spectroscopy (FAAS). The results indicate that the adsorption process is very fast as equilibrium is obtained within one minute with a maximum capacity of 333 mg g−1. The isotherm study and error analysis showed that the adsorption process followed the Freundlich model. The regeneration study was also performed and the adsorbed ions were eluted with 0.5 mol L−1 of thiosulfate solution. The limit of detection (LOD) was calculated as three times the standard deviation of the blank signal (n = 6) and it was 0.92 μg L−1. Moreover, the relative standard deviation in the determination of 100 μg L−1 of gold ions was found to be 3.4%.
Starting Page	1351
Ending Page	1358
Page Count	8
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	8
Issue Number	6
Journal	Analytical Methods
DOI	10.1039/c5ay02778k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ethylene glycol Atomic absorption spectroscopy Nanostructure Coefficient of variation X-ray crystallography Freundlich Adsorption Thiosulfate Maximum Capacity Raman Standard deviation Polyol Sodium thiosulfate
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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